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wol: accensione dispositivo

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function wakeUp($macAddressHexadecimal, $broadcastAddress)

{

	$macAddressHexadecimal = str_replace(':', '', $macAddressHexadecimal);

	// check if $macAddress is a valid mac address

	if (!ctype_xdigit($macAddressHexadecimal)) {

		throw new \Exception('Mac address invalid, only 0-9 and a-f are allowed');

	}

	$macAddressBinary = pack('H12', $macAddressHexadecimal);

	$magicPacket = str_repeat(chr(0xff), 6).str_repeat($macAddressBinary, 16);

	if (!$fp = fsockopen('udp://' . $broadcastAddress, 7, $errno, $errstr, 
2)) {

		throw new \Exception("Cannot open UDP socket: {$errstr}", $errno);

	}

	fputs($fp, $magicPacket);

	fclose($fp);

}



wakeUp('33:22:12:64:cc:15','192.168.0.120');


Ma il dispositivo non si accende... perchè?

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wol: accensione dispositivo alex <1j9448a02@lnx159sneakemail.com.invalid> - 2016-10-24 09:22 +0200
  Re: wol: accensione dispositivo bramante <bramante@yopmail.com> - 2016-10-24 10:04 +0200
    Re: wol: accensione dispositivo alex <1j9448a02@lnx159sneakemail.com.invalid> - 2016-10-24 13:00 +0200
      Re: wol: accensione dispositivo fulvio <fparnigoniTOGLIMI@videosoft.biz> - 2016-10-24 19:01 +0200
        Re: wol: accensione dispositivo alex <1j9448a02@lnx159sneakemail.com.invalid> - 2016-10-24 19:40 +0200
          Re: wol: accensione dispositivo fulvio <fparnigoniTOGLIMI@videosoft.biz> - 2016-10-25 10:07 +0200
            Re: wol: accensione dispositivo alex <1j9448a02@lnx159sneakemail.com.invalid> - 2016-10-25 18:07 +0200
              Re: wol: accensione dispositivo fulvio <fparnigoniTOGLIMI@videosoft.biz> - 2016-10-26 18:34 +0200
                Re: wol: accensione dispositivo alex <1j9448a02@lnx159sneakemail.com.invalid> - 2016-10-27 13:20 +0200

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